Siemens SINUMERIK 840D Description Of Functions page 121

02.99
Controlled system
gain of force
controller
5240 FORCECONTROLLED_SYSTEM_GAIN
Controlled system gain of force controller
Unit: Default:
N/V 0.0
P component
of force controller
5242
FORCECTRL_GAIN [n]
P gain of force controller
Unit: Default:
– 0.0
5243 FORCECTRL_GAIN_RED
Reduction of force controller P component
Unit: Default:
% 40.0
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/SIMODRIVE 611 digital Descr. of Functions HLA Module (FBHLA) – 04.00 Edition
Minimum: Maximum:
0.0 1000000000.0
MD 5240 contains the controlled system proportional gain for the force control
loop.
Since the force control loop has an integral action, a unit integrator (I-action time
of 1 second) was subtracted from the controlled system to calculate the gain.
MD 5240 is preset by the "Calculate drive model data" routine.
The controlled system gain depends on the volume of oil in the cylinder and the
rated volumetric flow of the servo solenoid valve. The value should not gener-
ally be altered.
The value in MD 5240 is the reference for the P gain of the force controller.
MD 5240 makes allowance for the effects of geometric dimensions.
The effect of the valve dynamic response is taken into account in MD 5242,
which means that the same gain value can always be set for an identical valve
dynamic response on different cylinders.
0...7 index of the parameter set
Minimum: Maximum:
0.0 10000.0
If force limitation and/or static friction injection is activated in MD 5241, the P
gain of the force controller is entered in this machine data.
The P-gain reference is MD 5240 containing a value representing the overall
effects of geometric dimensions.
The effect of the valve dynamic response is taken into account in MD 5242,
which means that the same gain value can always be set for an identical valve
dynamic response on different cylinders.
Minimum: Maximum:
0.1 100.0
4 Firmware Drive Functions
4.4 Closed-loop force control
Cross ref.: –
Relevant for: Protection level:
HLA 3/3
Data type: Effective:
FLOAT Immediately
Cross ref.: –
Relevant for: Protection level:
HLA 3/3
Data type: Effective:
FLOAT Immediately
Cross ref.: –
Relevant for: Protection level:
HLA 3/3
Data type: Effective:
FLOAT Immediately
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